InFocus LP 735, LP 725 warranty Troubleshooting

M a i n t e n a n c e & T r o u b l e s h o o t i n g

NOTE: Macintosh computers require a specific power-up sequence: the projector must be turned on before you turn on the computer.

Troubleshooting

If you’re experiencing trouble with the projector, follow these steps to make sure everything is properly connected before you call Technical Support for assistance.

1Check cable connections. Verify that all computer, CableWiz- ard and power cables are properly connected.

2Verify that all power is switched on.

3Verify that the projector has not been switched off with the standby button on the keypad.

4If the projector still doesn’t display an image, restart the com- puter.

5If the problem still exists, unplug the projector from the com- puter and check the computer monitor’s display. The maxi- mum resolution that the 725 can display is 1024x768 pixels, preferably 800x600; the maximum resolution that the 735 can display is 1280x1024 pixels, preferably 1024x768. The problem might be with the graphics controller in your computer rather than with the projector. When you reconnect the projector, remember to turn the computer and monitor off before you power up the projector. Power the equipment back up in this order: projector, monitor, computer.

6If you’re using a laptop computer and it is not displaying your presentation, make sure you have activated the computer’s external video output. Most laptop computers do not auto- matically turn on their external video port when a secondary display device such as a projector is connected. Refer to page 53 for more information.

7If the problem still exists, read through the problems and solu- tions in this chapter.

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